You know the steam folks came out with numbers that showed higher performance on linux than windows. But 30% is meh... You going to get far bigger range of performance from different grfx cards. No point super optimizing for one specific case.

I have no special talents. I am only passionately curious.--Albert Einstein

If you are looking to get your performance back on linux playing minecraft, then you have to drop OpenJDK. If you are on Ubuntu or another Debian based distro here is a tutorial to install Oracle's JDK, which is far superior to OpenJDK. If you are using Fedora or another RPM based distro, go to java.com and simply download and install the .rpm

Switching from the default to oracle's increased my performance greatly, better than what I was getting on Windows actually.

If you are looking to get your performance back on linux playing minecraft, then you have to drop OpenJDK. If you are on Ubuntu...

You comparing like with like there? ie. OpenJDK 7 with Oracle Java 7? The default OpenJDK on Ubuntu is 6, but 7 is in the repos. They shouldn't be that much different in speed - they're practically the same code base.

If you are looking to get your performance back on linux playing minecraft, then you have to drop OpenJDK. If you are on Ubuntu or another Debian based distro here is a tutorial to install Oracle's JDK, which is far superior to OpenJDK.

OpenJDK and Oracle JDK share 97% of their source code. I completely disagree with you about the "superiority" of Oracle JDK. Maybe Minecraft is slower with OpenJDK but it doesn't mean than OpenJDK is slower than Oracle JDK. There is still a known bug preventing from running Minecraft as an applet with Icedtea-web & OpenJDK but actually it comes from something else as you can see here. Minecraft, an extremely famous game has a bad support of OpenJDK and you blame OpenJDK instead of blaming Minecraft itself, it's not fair. I have never noticed measurable performance differences when developing 3D applications in Java when running them both with OpenJDK and Oracle JDK.

because the linux drivers arent nearly as good as the windows ones. -_-

Yes, that is what I think too.

Which drivers? Proprietary or free open source ones? Don't mix up everything. The last version of Windows having a better support of OpenGL than GNU Linux was Microsoft Windows 98. After that, OpenGL was known to be faster and more reliable under GNU Linux in general.

The last version of Windows having a better support of OpenGL than GNU Linux was Microsoft Windows 98. After that, OpenGL was known to be faster and more reliable under GNU Linux in general.

Adding to this statement, IIRC Valve managed to get better performance on Ubuntu when they began porting some of their games to OpenGL.

Quote

"That the Linux version [of Left 4 Dead 2] runs faster than the Windows version (270.6) seems a little counter-intuitive, given the greater amount of time we have spent on the Windows version. However, it does speak to the underlying efficiency of the kernel and OpenGL" - Valve Linux Team (source)

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